An unknown compound contains only carbon, hydrogen, and oxygen (cxhyoz). combustion of 4.50 g of this compound produced 6.60 g of carbon dioxide and 2.70 g of water. how many moles of hydrogen, h, were in the original sample

The number of moles of Hydrogen H  that were in the original sample is

0.30 moles

               CxHyOz  + O2 →  CO2 + H2O

   moles= mass/molar mass

        =  6.60g/44 g/mol=0.15 moles

  molar mass= mass/  moles

 =  4.50/0.15=  30 g/mol

 C =x(12 g/mol)  if  x=1  then c= 12  g/mol

  H= y (1 g/mol) if Y=1 then H=1 g/mol

   O=Z(16g/mol) if O=16 then O= 16g/mol

 the formula of the compound from the value of X,y and  z above = CHO

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a